Roof access, pathways and setback requirements shall be provided in accordance with Sections R324.6.1 through R324.6.2.1. Access and minimum spacing shall be required to provide emergency access to the roof, to provide pathways to specific areas of the roof, provide for smoke ventilation opportunity areas, and to provide emergency egress from ...

R324.6.1 Pathways. Not fewer than two pathways, on separate roof planes from lowest roof edge to ridge and not less than 36 inches (914 mm) wide, shall be provided on all buildings. Not fewer than one pathway shall be provided on the street or driveway side of the roof.

Sign In R324.6.2 Setback at ridge. For photovoltaic arrays occupying not more than 33 percent of the plan view total roof area, not less than an 18-inch (457 mm) clear setback is required on both sides of a horizontal ridge.

R324 Solar Photovoltaic Systems • Photovoltaic systems shall be designed and installed in accordance with Sections R324.3.1 through R324.7.1, NFPA 70 and the manufacturer’s installation instructions • Inverters shall be listed and labeled in accordance with UL 1741

Rooftop-mounted photovoltaic panel systems shall be designed and installed in accordance with Section R324 and NFPA 70 ...

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Roof access, pathways and spacing requirements for solar photovoltaic systems shall be provided in accordance with Sections R324.7.1 through R324.7.6. Roof access, pathways and spacing need not be provided where an alternate ventilation method has been provided, or where vertical ventilation techniques will not be employed.

2018 IRC Section R324.6.1 Not fewer than two pathways, on separate roof planes from lowest roof edge to ridge and not less than 36-inches wide, shall be provided on all buildings. Not fewer than one pathway shall be provided on the street or …

R324.6.1 Pathways. Not fewer than two pathways, on separate roof planes from lowest roof edge to ridge and not less than 36 inches (914 mm) wide, shall be provided on all buildings. Not fewer than one pathway shall be provided on the street or driveway side of the roof.

Although Section R324.2 requires that solar thermal systems also comply with the IFC, the solar-related provisions of the IFC (Section 605.11) pertain to rooftop-mounted solar photovoltaic arrays, not solar thermal systems. This is the 2015 International Residential Code (2nd printing as adopted by New York State) Effective October 3, 2016 .